Selection Of Drill Pipes Tool Joints
- Outside diameter
- Inside diameter
- Torsional ratings
- Tool joints with large OD and small ID will result in high pressure losses inside and outside the Drill Pipe.
- Large OD tool joints have better wear characteristics.
- The OD of the tool joint should be small enough to facilitate fishing the tool joint with standard fishing tools.
- One rule of thumb in the selection of tool joints is that when all other factors are equal the larger the tool joint, the better it will perform.